How to solve the abrasion of the hollow glass production line
Release time:
2018-12-25 10:25
How to solve the wear of the insulating glass production line? At present, there is no unified classification method for the wear of the insulating glass production line. It can be roughly summarized into two categories: one is the description of the appearance of wear based on the wear results, such as pitting wear, glue wear, and rubbing. The other is based on the friction mechanism, which is divided into abrasive wear, adhesive wear, fatigue wear, and corrosion wear.
How to solve the wear of the insulating glass production line? At present, there is no unified classification method for the wear of the insulating glass production line. It can be roughly summarized into two categories: one is the description of the appearance of wear based on the wear results, such as pitting wear, glue wear, and rubbing. The other is based on the friction mechanism, which is divided into abrasive wear, adhesive wear, fatigue wear, and corrosion wear.
1. Adhesive wear of the insulating glass production line. Under the action of tangential force, the adsorption film and the dirty film on the surface of the friction pair are destroyed, so that the contour peaks of the surface are cold welded at each point of the interaction. Due to the relative movement, the material It transfers from one surface to another, forming adhesive wear. In this process, sometimes the material will reattach back to the original surface, reverse transfer, or detach from the attached surface and become free particles. The greater the load, the higher the surface temperature, and the more serious the adhesion phenomenon. Severe adhesive wear will cause the sports pair to seize. Adhesive wear is the most common form of wear between metal friction pairs.
In order to reduce adhesive wear, the following measures can be taken: ① Reasonably select matching materials. The same kind of metal is easier to adhere than dissimilar metals; brittle materials have stronger anti-adhesion ability than plastic materials. Surface treatment (such as surface heat treatment, electroplating, spraying, etc.) can prevent adhesion and wear. ②Limit the temperature of the friction surface. ⑤Use lubricants containing oily and extreme pressure additives. ④Control the pressure.
2. Abrasive wear of the hollow glass production line. Free hard particles (such as dust or metal particles caused by abrasion) or hard contour peaks that enter the surface of the rubbing surface from the outside are caused by ploughing many grooves on the surface of the softer material. The phenomenon of material shedding is called abrasive wear. Abrasive wear is related to the hardness of the friction pair material and the hardness of the abrasive particles. Sometimes it is more in line with economic principles to choose cheaper materials and replace easily worn parts on a regular basis.
3. Fatigue and wear of the insulating glass production line. Under the action of variable contact stress, if the stress exceeds the corresponding contact fatigue limit of the material, fatigue cracks will form on the surface of the friction pair or at a certain depth below the surface. As the cracks grow and interact with each other When connected, the metal particles will fall off from the working surface of the part, causing pitting damage on the surface. That is, fatigue wear or fatigue pitting is formed.
In order to improve the fatigue life of the part surface, in addition to the reasonable choice of friction pair materials, attention should also be paid to: ① Reasonably choose the surface roughness of the contact surface of the part. In general, the smaller the surface roughness value, the longer the fatigue life. ② Reasonably choose lubricating oil viscosity. Oil with low viscosity tends to infiltrate cracks and accelerate crack propagation. The lubricating oil with high viscosity is conducive to the uniform distribution of contact stress and improves the ability to resist fatigue and wear. Adding extreme pressure additives or solid lubricants to the lubricating oil can improve the fatigue resistance of the contact surface. ③ Reasonably choose the hardness of the contact surface of the parts. Taking bearing steel as an example, when the hardness is 62HRc, the anti-fatigue wear ability is the highest, increasing or decreasing the surface hardness, the life is greatly reduced.
4. Corrosion and abrasion of the hollow glass production line During the friction process, the surface damage caused by the chemical or electrochemical reaction between the metal and the surrounding medium (such as the acid in the air, lubricating oil, etc.) is called corrosion and abrasion. Among them, oxidative wear is the most common. This is the phenomenon of repeated formation and removal of oxide film on the contact surface when the metal friction pair is working in an oxidizing medium. In fact, it is a process in which two effects of chemical oxidation and mechanical wear are carried out successively. The size of oxidation wear depends on the connection strength of the oxide film and the oxidation speed.
In addition to the above-mentioned four basic types of abrasion of the insulating glass production line, there are also some abrasion phenomena that can be regarded as the derivation or compound of the basic abrasion types. The former is like erosion and wear, and the latter is like fretting wear.
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